Sometimes blank notifications on dark mode

[Zoltan Seboek]

Hi,

since I have switched over fron an Android 7 device to an Andoir 9 device (Samsung Galaxy S8+), I am using night node system-wide. Unfortunately, the K9 mail notifications don't always follow this color scheme.

This leads to having notifications, which appear to be blank, but they aren't, it's just that K9 doesn't always seem to follow the system-wide color scheme of night mode correctly, displaying the notifications with white text on white background.

Could someone please fix this?

Thanks.